20313131641434 has 128 divisors (see below), whose sum is σ = 47542658088960. Its totient is φ = 6420692577600.

The previous prime is 20313131641393. The next prime is 20313131641447. The reversal of 20313131641434 is 43414613131302.

20313131641434 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 3 + 1 + 3 + 1 + 641 + 4 + 3 + 4 = 666.

It is a super-2 number, since 2×20313131641434² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18848944 + ... + 19897460.

It is an arithmetic number, because the mean of its divisors is an integer number (371427016320).

Almost surely, 2^{20313131641434} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313131641434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23771329044480).

20313131641434 is an abundant number, since it is smaller than the sum of its proper divisors (27229526447526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313131641434 is a wasteful number, since it uses less digits than its factorization.

20313131641434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048793 (or 1048787 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 20313131641434 its reverse (43414613131302), we get a palindrome (63727744772736).

The spelling of 20313131641434 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-one million, six hundred forty-one thousand, four hundred thirty-four".